This bestselling book is now the standard guide to building phone systems with Asterisk, the open source IP PBX that has traditional telephony providers running scared! Revised for the 1.4 release of the software, the new edition of Asterisk: The Future of Telephony reveals how you can save money on equipment and support, and finally be in control of your telephone system.

If you've worked with telephony in the past, you're familiar with the problem: expensive and inflexible systems that are tuned to the vendor's needs, not yours. Asterisk isn't just a candle in the darkness, it's a whole fireworks show. Because Asterisk is so powerful, configuring it can seem tricky and difficult. This book steps you through the process of installing, configuring, and integrating Asterisk with your existing phone system.

Thoroughly revised for the new CompTIA Network+ exam, the Seventh Edition of this bestselling All-in-One Exam Guide delivers 100% coverage of the exam objectives and serves as a valuable on-the-job reference. Take the latest version of the CompTIA Network+ exam with complete confidence using the fully updated information contained in this comprehensive self-study system. The book offers clear instruction and real-world examples from training expert and bestselling author Mike Meyers along with hundreds of accurate practice questions.

This book brings together leading researchers and developers in the field of wireless sensor networks to explain the special problems and challenges of the algorithmic aspects of sensor and ad-hoc networks.

Security Controls Evaluation, Testing, and Assessment Handbook provides a current and well-developed approach to evaluation and testing of security controls to prove they are functioning correctly in today's IT systems. This handbook shows you how to evaluate, examine, and test installed security controls in the world of threats and potential breach actions surrounding all industries and systems. If a system is subject to external or internal threats and vulnerabilities - which most are - then this book will provide a useful handbook for how to evaluate the effectiveness of the security controls that are in place. Security Controls Evaluation, Testing, and Assessment Handbook shows you what your security controls are doing and how they are standing up to various inside and outside threats. This handbook provides guidance and techniques for evaluating and testing various computer security controls in IT systems.

Learn how to design, plan, implement, and support a secure remote access solution using DirectAccess in Windows Server 2016. Remote Access has been included in the Windows operating system for many years. With each new operating system release, new features and capabilities have been included to allow network engineers and security administrators to provide remote access in a secure and cost-effective manner.

Learn how to master Google’s unmissable free apps! There is so much more to Google than just searching online! From humble beginnings as a search engine, Google now provides email with free online storage, photo management and editing, social networking with millions of users, one of the best Internet browsers around, the biggest video site in the world, the market-leading smartphone operating system, interactive maps and navigation, a free blogging platform and much, much more. 100% unofficial.

This book offers a real solution for all those who love cybersecurity and hacking on Wi-Fi / 802.11 technologies, those who want to learn how to easily program their own tools for pentesting or auditing wireless networks. During the recent years Python has reached a prominent position as one of the bests programming languages for the pentesting, thanks to its simplicity and its wide capabilities. The large number of modules, libraries and examples publicly available permit to easily code any kind of application. Scapy is the most complete network module for Python, and allows analyzing, dissecting, forging and injecting any frame over any existing network protocol. The scarcity of documentation on Scapy Dot11 makes this book a unique tool for all professionals, hackers, pentesters, security analysts and cyberforenses who wish to create their own arsenal of Wi-Fi penetration tools.

CCNA Collaboration CIVND 210-065 Official Cert Guide from Cisco Press enables you to succeed on the exam the first time and is the only self-study resource approved by Cisco. Expert Cisco Collaboration engineers Brian Morgan and Jason Ball share preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills.

How to Attack and Defend Your Website is a concise introduction to web security that includes hands-on web hacking tutorials. The book has three primary objectives: to help readers develop a deep understanding of what is happening behind the scenes in a web application, with a focus on the HTTP protocol and other underlying web technologies; to teach readers how to use the industry standard in free web application vulnerability discovery and exploitation tools – most notably Burp Suite, a fully featured web application testing tool; and finally, to gain knowledge of finding and exploiting the most common web security vulnerabilities.

Mastering Skype for Business 2015 gives administrators the comprehensive coverage they need to effectively utilize Skype for Business. Fully up to date for the 2015 release, this guide walks you through industry best practices for planning, design, configuration, deployment, and management with clear instruction and plenty of hands-on exercises.

Case studies illustrate the real-world benefits of Unified Communication, and provide expert experiences working with Skype for Business. From server roles, infrastructure, topology, and security to telephony, cloud deployment, and troubleshooting, this guide provides the answers you need and the insight that will make your job easier. Sample automation scripts help streamline your workflow, and full, detailed coverage helps you exploit every capability Skype for Business has to offer.